/**
 * Copyright (c) 2015, 漆夜
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * * Redistributions of source code must retain the above copyright notice, this
 *   list of conditions and the following disclaimer.
 *
 * * Redistributions in binary form must reproduce the above copyright notice, this
 *   list of conditions and the following disclaimer in the documentation and/or
 *   other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "redis_wrapper.h"

std::size_t redis::hashs::hlen(redisContext *redis_handle, const char *key)
{
    if (NULL == redis_handle) {
        return 0;
    }

    redis::wrapper::RedisReply reply((redisReply*)redisCommand(redis_handle, "hlen %s", key));

    if (!redis::ok(redis_handle)) {
        std::cout << redis::error_str(redis_handle) << std::endl;
        return 0;
    }

    if (!reply.is_vaild()) {
        return 0;
    }

    if (reply.c_data()->type == REDIS_REPLY_INTEGER) {
        return (std::size_t)reply.c_data()->integer;
    }

    return 0;
}

template <>
bool redis::hashs::hset(redisContext *redis_handle, const char *key, std::string field, std::string val) {

    if (NULL == redis_handle) {
        return false;
    }

    // 执行hset
    redis::wrapper::RedisReply reply ((redisReply *) redisCommand(
                                          redis_handle, "hset %s %s %s",
                                          key,
                                          field.c_str(),
                                          val.c_str()
                                          )
                                      );

    if (!redis::ok(redis_handle)) {
#ifdef CLIENT_DEBUG
        std::cout << redis::error_str(redis_handle) << std::endl;
#endif
        return false;
    }

    if (!reply.is_vaild()) {
        return false;
    }
#ifdef CLIENT_DEBUG
    show_reply(reply.c_data());
#endif
    return true;
}

template <>
bool redis::hashs::hget(redisContext *redis_handle, const char *key, const std::string &field, std::string &val) {

    if (NULL == redis_handle) {
        return false;
    }

    redis::wrapper::RedisReply reply((redisReply*)redisCommand(
                                         redis_handle,
                                         "hget %s %s",
                                         key,
                                         field.c_str()));

    if (!redis::ok(redis_handle)) {
#ifdef CLIENT_DEBUG
        std::cout << redis::error_str(redis_handle) << std::endl;
#endif
        return false;
    }

    if (!reply.is_vaild()) {
        return false;
    }

    val = reply.get_string();

    return true;
}

